摘要
为探究工业遗留场地土壤重金属污染特征与空间分布规律,本研究以上海某历史钢铁厂区及周边为对象,布设35个监测点,采集140个土壤样品,测定8种重金属含量。结果显示,8种重金属均有检出,As、Ni、Co为特征污染物,工业区表层土壤中三者超标率分别为13.3%、33.3%、66.7%,Co污染最突出(最大超标倍数5.0,内梅罗指数达重度污染)。空间上“核心-过渡-边缘”梯度递减格局,垂向上具显著“表聚性”。相关性分析表明,As、Ni、Co等多源于钢铁生产相关活动,Cd来源独立。
To investigate the contamination characteristics and spatial distribution patterns of heavy metals in soil at a historically industrial site,focused on a former steel plant area and its surroundings in Shanghai.,35 monitoring points were established,and 140 soil samples were collected to analyze eight heavy metals.Results showed that all 8 heavy metals were detected,with As,Ni and Co as characteristic pollutants.In the surface soil of the industrial zone,their exceedance rates were 13.3%,33.3%and 66.7%respectively.Co was the most prominent pollutant(maximum exceedance multiple of 5.0,Nemerow comprehensive pollution index reached heavily polluted level).Spatially,contamination exhibited a"core-transition-periphery"gradient pattern,with strong"surface accumulation"vertically.Correlation analysis indicated As,Ni,Co,etc,mainly originated from steel production activities,while Cd had an independent source.
作者
阳杰
YANG Jie(Shanghai Xingdong Environmental Sci-tech Co.,Ltd.,Shanghai 200042,China)
出处
《广州化工》
2026年第4期131-137,共7页
GuangZhou Chemical Industry
关键词
钢铁厂
土壤重金属
空间分布
污染特征
steel plant
soil heavy metals
spatial distribution
pollution characteristics
